New species of Chrysosoma Guérin-Méneville (Diptera: Dolichopodidae), with a key to Chinese species Author Zhu, Yajun Author Yang, Ding text Zootaxa 2005 2005-08-05 1029 1 47 60 https://biotaxa.org/Zootaxa/article/view/zootaxa.1029.1.4 journal article 5879 10.11646/zootaxa.1029.1.4 3ab85c94-9a87-4a81-b3a9-dae2e2465e1a 1175­5334 5050265 38E732FA-E295-41A6-8B79-BBB123754A9A Key to species (males) of Chrysosoma from China 1. Wing with dark brown maculation, continuous along anterior margin, with excavation from posterior margin.................................................................................................... 2 ­ Wing hyaline or with subapical spot or clouding near costa......................................... 5 2. Antenna black or brownish black.................................................................................. 3 ­ Antenna yellow; cercus widely furcate ............................ Chrysosoma cupido (Walker) 3. CI yellow ....................................................................................................................... 4 ­ All coxae black; cercus widely furcate ............ Chrysosoma dalianum Yang et Saigusa 4. Crossvein m­cu straight… ................................................ Chrysosoma chinense Becker ­ Crossvein m­cu strongly bent; cercus long and finger­like............................................. ........................................................................... Chrysosoma serratum Yang et Saigusa 5. Flagellum and arista separated ...................................................................................... 6 ­ Flagellum and arista fused; cercus with digitiform dorsal projection and bilobed ventral arm ................................................................ Chrysosoma crinicorne (Wiedemann) 6. TIII with an excavated swollen callus at base............................................................... 7 ­ TIII tibia without swollen callus ................................................................................... 8 7. Arista with apical flag; IIt 4­5 normal; cercus slender with 2 dorsal projections at base and 1 sub­apically .............................................. Chrysosoma globiferum (Wiedemann) ­ Arista simple; IIt 4­5 flattened with white hairs; cercus furcated apically......................... ........................................................................... Chrysosoma leucopogon (Wiedemann) 8. Arista with apical flag ................................................................................................... 9 ­ Arista simple… ........................................................................................................... 11 9. Antenna black….......................................................................................................... 10 ­ Antenna yellow; cercus widely furcated, ventral lobe also furcated apically ................. ......................................................................................... Chrysosoma piriforme Becker 10. CI yellow; cercus slender .................................................. Chrysosoma hainanum Yang ­ CI blackish; cercus short and furcated ( Fig. 10 ) ... Chrysosoma zengchengense sp. nov. 11. CI black ....................................................................................................................... 12 ­ CI yellow .....................................................................................................................18 12. Abdomen without dense cream­clouded hairs ventrally ............................................. 13 ­ Abdomen with dense cream­clouded hairs ventrally; cercus widely furcated, ventral lobe apically trifurcated .................................................. Chrysosoma floccosum Becker 13. Femora yellow............................................................................................................. 14 ­ Femora chiefly black................................................................................................... 17 14. Palpus black or blackish… .......................................................................................... 15 ­ Palpus yellowish; cercus furcated apically Chrysosoma cyaneculiscutum Bickel et Wei 15. Arista nearly as long as head + thorax… .................................................................... 16 ­ Arista much longer than head + thorax; cercus furcated apically ( Fig. 3 )...................... ................................................................................... Chrysosoma nanlingense sp. nov. 16. FI with long pale ventral hairs on basal half; cercus subrectangular, long and rather thick ............................................................................ Chrysosoma crassum Yang et Saigusa ­ FI with short pale ventral hairs on basal half; cercus apically furcated into several finger­like processes ...................... Chrysosoma guangdongense Zhang, Yang et Grootaet 17. Arista nearly as long as head + thorax; cercus without dorsal projection ( Fig. 7 ).......... .................................................................................... Chrysosoma shixingense sp. nov. ­ Arista much longer than head + thorax; cercus with short digitiform dorsal projection ....................................................................................... Chrysosoma guizhouense Yang 18. It 1 somewhat thick with plumose lateral hairs............................................................. 19 ­ It 1 normal..................................................................................................................... 20 19. Thorax mainly dark yellow; cercus slender Chrysosoma jinpinganum Yang et Saigusa ­ Thorax mainly metallic green; cercus long and furcated apically ( Fig. 5 ) ..................... .................................................................................... Chrysosoma ruyuanense sp. nov. 20. Arista longer than head + thorax ................................................................................. 21 ­ Arista shorter than head + thorax ................................................................................ 24 21. CII yellow.................................................................................................................... 22 ­ CII black; cercus with short digitiform dorsal projection and long bilobed clavate ventral arm ....................................................................... Chrysosoma hangzhouense Yang 22. Thorax mainly metallic green ..................................................................................... 23 ­ Thorax mainly yellow; cercus long and finger­like ........................................................ .................................................................................. Chrysosoma xanthodes Yang et Li 23. CIII yellow; surstylus with 3 ventral processes .............................................................. ....................................................................... Chrysosoma yunnanense Yang et Saigusa ­ CIII black; surstylus with apical denticles ... Chrysosoma pallipilosum Yang et Saigusa 24. All coxa yellow; cercus subtriangular .......... Chrysosoma luchunanum Yang et Saigusa ­ CI yellow, CII and CIII black; cercus long with thin and curved apex ........................... .......................................................................................... Chrysosoma insensibile Yang